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One family that also celebrates the Earth Day is "The Simpsons". In a bunch of promo, in line with FOX's "Green It. Mean It." campaign, Homer does some precautions to save the earth, including changing the light bulbs to the energy-saving ones. But true to Homer's nature, he burns in open air the old ones.

The dysfunctional family also made reference to former U.S vice president, Al Gore, who has been keen on saving the planet with his campaigns. In "Green Tip: Heating Tip", Marge complains that Homer did not pay the heating bill and Homer said, "It's that Global Warming we take care of it. Al Gore can't do anything."

"The Simpsons" airs ever Sundays at 8/7c on FOX. This week in "Father Knows Worst", Bart and Lisa start struggling in their academic and social lives at school and Homer starts monitoring them and forcing them to do better. Meanwhile, Marge discovers a sauna in the basement.

• Earth Day

• Light Bulbs

• Heating Tip